Andrew Zonenberg on Nostr: Does anyone have any tables or simulation data showing effective ranges of common ...
Does anyone have any tables or simulation data showing effective ranges of common decoupling capacitors?
In other words, accounting for the package parasitics figure out the frequency band where it's most effective, then use that to determine how close to the power balls it needs to be for best results.
I've seen bits and pieces of this floating around, the math is out there, but what I haven't seen is any end-to-end examples like "0.47 uF 0402 X7R best placed within 2mm of the load, 4.7 uF 0603 X7R best placed within 15mm" or something.
Qualitatively, I know the bigger packages have worse parasitics and cover lower frequency bands, thus can be placed further away, but I'd love to see quantitative data on this.
npub17wkkj73azdfr23hmgd07fn0h39xvy0w72garahk5p8hg8jv8dx5s09uzqr (npub17wk…uzqr) or npub1ccvvkmx4xqyaqdzpd90ycuavhctfrq23qpaftqlrr0vvh6u2rpks9umh8p (npub1ccv…mh8p) ?
In other words, accounting for the package parasitics figure out the frequency band where it's most effective, then use that to determine how close to the power balls it needs to be for best results.
I've seen bits and pieces of this floating around, the math is out there, but what I haven't seen is any end-to-end examples like "0.47 uF 0402 X7R best placed within 2mm of the load, 4.7 uF 0603 X7R best placed within 15mm" or something.
Qualitatively, I know the bigger packages have worse parasitics and cover lower frequency bands, thus can be placed further away, but I'd love to see quantitative data on this.
npub17wkkj73azdfr23hmgd07fn0h39xvy0w72garahk5p8hg8jv8dx5s09uzqr (npub17wk…uzqr) or npub1ccvvkmx4xqyaqdzpd90ycuavhctfrq23qpaftqlrr0vvh6u2rpks9umh8p (npub1ccv…mh8p) ?